The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > General Truck Forums > Engine & Drivetrain

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 04-04-2018, 06:17 PM   #1
climberman
Registered User
 
Join Date: Nov 2011
Location: Heber City
Posts: 63
oil pressure

I had a guy in town re-build a 350 for me it is a 1976. Everything new finally have it back, took it for a ride and after it warmed up when I come to a stop the oil pressure dropped to about 5-10 pounds. Could that be correct?

Thanks

Rocky
climberman is offline   Reply With Quote
Old 04-04-2018, 06:51 PM   #2
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 9,504
Re: oil pressure

It could be!
You need 10 psi per 1000 rpm.
Is it a real mechanical pressure gauge or a factory one?
Does it make any strange noises at idle?
geezer#99 is offline   Reply With Quote
Old 04-05-2018, 01:17 AM   #3
hans2
New Member
 
Join Date: Feb 2018
Location: Sitka AK
Posts: 18
Re: oil pressure

Quote:
Originally Posted by geezer#99 View Post
It could be!
You need 10 psi per 1000 rpm.
Is it a real mechanical pressure gauge or a factory one?
Does it make any strange noises at idle?
I'd sure be nervous at anything under 10#. Maybe pull a valve cover and see if you're oiling up top at idle. If not, your guy may have left out the oil galley plug under the rear main bearing. They usually pop them out of the block is media blasted instead of hot tanked. Some guys forget to put them back in.
hans2 is offline   Reply With Quote
Old 04-05-2018, 09:31 AM   #4
climberman
Registered User
 
Join Date: Nov 2011
Location: Heber City
Posts: 63
Re: oil pressure

Its not mechanical its electric

I will go talk to them today I was. I wasn't sure if I should drive the truck today.

It doesn't make any noises sound good.

Thanks
climberman is offline   Reply With Quote
Old 04-05-2018, 09:37 AM   #5
geezer#99
Registered User
 
geezer#99's Avatar
 
Join Date: Aug 2009
Location: Bowser
Posts: 9,504
Re: oil pressure

Does it idle a little rough?
Maybe not related but what’s your timing like?
geezer#99 is offline   Reply With Quote
Old 04-05-2018, 10:01 AM   #6
SunSoaked
Senior Member
 
Join Date: Dec 2011
Location: Yuma Arizona
Posts: 676
Re: oil pressure

My 85 showed 10-15# at idle. I just converted it to a vortec with roller cam and FI. To be on the safe side, I hooked up my mechanical autometer pressure guage. No surprise, the autometer shows about 15-20 more psi. Ditto with the temp guage. In the process of customizing an extra bezel with autometer guages.
__________________
"I once saw a six foot chicken eating prairie dogs like they were worms, but this was while driving between Janos, Chihuahua, Mexico and Agua Prieta, Sonora, Mexico on Route 9, after having consumed my share of El Presidente whiskey "
SunSoaked is offline   Reply With Quote
Old 04-05-2018, 11:01 AM   #7
B. W.
Senior Member
 
B. W.'s Avatar
 
Join Date: Nov 2014
Location: Bigfork, Montana
Posts: 935
Re: oil pressure

check it with a mechanical gauge to confirm the accuracy of your electric gauge. GM oil pressure senders are known for reading low.
B. W. is offline   Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 12:21 AM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2018, vBulletin Solutions Inc.
Copyright 1997-2013 67-72chevytrucks.com